The Americans certainly took their fucking time to get involved though.
If you want them to get involved quickly you have to have socialist revolution.
We didn’t hate them until we thought they might actually take us over as well. We weren’t fighting Nazis, we were fighting “un-Americans”. It’s literally just another flavor of racism(that we helped teach the Germans lmao - they loved our concept of eugenics)
Notice how after Nazis it went to Commies, the other “un-American” type.